Flushing apparatus.



will@ @BERT STICKDDRN, 0F ZURICH, SWITZERLAND, .ASSIGNOR T0 ALBERTECKSI'JEN` 031' NEW YORK, N. Y.

FLUSHING APPARATS.

Speccation of Letters Patent.

Patented Jan. 29, tht.

Application 'filed 1-tpr1f3` 191'?. Serial No. 163.88%.

To all whom i# 'may concern.'

Be it known that l, ROBERT STIoKDonn, a subject of the Emperor ofGermany, residing at Zurich, Switzerland, have invented certain new anduseful Improvements in Flushing Apparatus; and do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawing,and to letters or figures of reference marked thereon, which form a partof this specification.

This invention relates to a flushing appaiatus for water-closets andother purposes of the type, in which upon an actuation of a distributingstepped piston at first a communication between a water supply pipe andthe interior of an air-Chamber is brought about, this communicationbeing then interrupted, owing to a differential action upon the steppedpiston, as soon as a certain pressure is reached in the air-chamber,whereupon the air-chamber is then put into communication with aflush-pipe.

ln the hitherto known flushing apparatus of the kind referred to, theprovision of a special inlet valve for the rinsing waterv is quiteunavoidable and a certain space between air-chamber and a casingprovided with con necting branches and adapted to take up the steppedpiston and said inlet valve has also to be provided. ln these knownflushing apparatus the stepped piston is moreover actuated by theoverpressure of the water produced in the air-chamber. Such a workinghas, however, the disadvantage that the pressure in the air-chamber isin consequence of unfavorable pressure-conditions no longer great enoughto open this piston to a sufiiciently great extent as soon as theair-chamber is put into communicati on with the fiushpipe through theagency of the stepped piston, so that the water current flowing into theflush-pipe is not strong enough to effect a perfect rinsing.

The flushing apparatus according to this invention is now characterizedin that the distributing stepped piston is guided in a casing arrangedinside an air-chamber consisting of two halves, the meeting ends ofwhich inclose an obtuse angle, and that said' piston findsv also a guidein the Hush-pipe when it is moved into the latter and after that thecoperation between this piston and guiding means provided in said casingis interrupted. The differential piston is thereby adapted to eectdirectly a communication between the water supply pipe and theair-chamber. As a consequence of this, the construction of said casingmay be considerably simplified and a special inletvalve for the watermay be dispensed with.

A further advantage of this new apparatus consists in that thedifferential piston is acted upon from that moment in which its movementeffecting a Vcommunication between the air-chamber and the flush-pipe isstarted during the whole duration of this movement by the pressure ofthe water prevailing in the supply-pipe, so that it is always moved in asufficient manner for securing the proper communication betweenair-chamber and flush-pipe.

My invention comprises also novel details of improvement andcombinations of parts that will be hereinafter more fully set forth andthen pointed out in the claims.

The invention will now be more particularly described with reference tothe accompanying drawing, which illustrates a constructional example ofthe invention.

In this drawing:

Figure l is a front view partly in section of this embodiment, and

Fig. 2 and F ig. 3 are sections on the line lll-H of F ig. 1, showingthe parts in different positions.

l denotes a branch communicating with the water supply pipe not shown onthe drawing and extending partly into the airchamber 2. The latterconsists of two halves joining at an obtuse angle. The joininginner'ends of these halves are situated lower down than their outerends. 3, i denote an axially movable stepped piston, the diameter of thepiston part 41 eX- ceeding that of the piston part 3, s0 as toconstitute a differential piston. The pistonl 3, a is hollow and open atboth ends. The parts 3, t are connected by a recessed portion 6.l 5denotes a handle for moving the differential piston 3, 4f.. The latteris guided in a stepped casing 7 having a round crosssection and weldedto the air-chamber 2. Branch l communicates with the interior of thiscasing 7. An adapting ring 8 isarranged in the lower part of the casing7 where it acts as a support for ring 9 ofjointing material.V denotes asecond adapting ring also arranged in the casing 7 and acting as asupport for a` ring 11 of jointing material. The two rings 9, 11 arekept in the proper position by means of a distance piece 12 providedwith longitudinal slots. The latter acts also as a sieve preventing anysolid substances in the water supply pipe from entering into theinterior` of the casing 7 and it constitutes at the same time a pressurereducing memberifor the purpose oit' obtaining a noiseless working ofthe apparatus. A ring 13 provided with an internal thread is rigidliTconnected to the casing 7. Atightening nut 14 coperates with ring 13. 15denotes a coverlimiting the upward movement oit the piston 3, 4

e Vand closing the casing j?. The described arrangement is such, thatthe piston 3, 4 may bev taken out of the casing 7 upon a removal. ofcover 15. vUpon unscrewing of ring 14, the parts 8, 9, 10,11 and 1 2 maybe easil'v Y and quickly taken Aout and inserted into the cylindricalcasing '7. 16 denotes the Hushpipe with which is rigidly connected anadapting ring 17 cooperating with a ring in which case the prevailingwater-pressure 18 of jointing material.r rthis pipe 16 is directlyconnected to the air-chamber 2.

The' cycle of operation of the described flushing apparatus is asfollows:

When the `parts are in their normal position, as shown in Fig. 2, 4thecommunication between the water inlet branch 1 and the interior of theair-chamber 2 is shut up and the distributing piston 8, 4 is held in thevlifted position by the 'pressure of the water.

@n'the other hand the flush-pipe 16 ccmmunicates with the interior ofthe air-chamber 2. l

It now the dierential piston 3. 4 is pressed down by means of a pressureon the handleY 5 of the same` in order'I to bring about a rinsingot' thecloset, first the cominunication between flush-pipe 16 and the interiorof the air-chamber 2 is inte rugted Thereupon the recessedportion of thedistributing'piston 3, 4 connects immediati-ely the branch 1 to theinterior or' the airchamber, the piston being therein7 also guided inthe iiush-pipe 16.- Owing to this. the ydistributing piston 3 4 isguided in all its positions in ay proper manner, this being even thenthe case when the recessed por! tion 6 prevents the guiding members 8. 9from coperating with said piston. fis soon as the communicationbetweenbranch 'l and the interior of the air-chamber 2 is effected, the latter'is' lilled with water until the pressure produced in this chamber isable to litt the piston 3, 4 owing to diiiierential action.

eXerts in the well known manner on the piston part 4, having the largerdiameter, a

greater force than Von the piston part 3. As a consequence of thisupward movement, the

communication between branch l and thc interior of air-chamber 2 is shutup and hereupon the discharge from the air-chainber 2 toward theHush-pipe is then set. tree. As soon as this is the case, thewater-pressure acting upon the lower sur'tace ot piston part assists thepiston 3, 4 in its upward movement. As the water-pressure prevailing inthe branch 1 acts during the whole upward movement of the piston 3, 4upon the larger piston part 4, the piston 3, 4 is moved under allconditions, and entirely independent ol the pressure-variationsoccurring in 'the airchamber 2 during the rinsing, to the desired degreein an upward direction, so that the piston part 3 is always liftedsuiiiciently, the result of this being that a water current strongenough to eii'cct a perfect rinsingot the closet is free to liow intoHush-pipe it. In the lifted position the distributing piston 3, 4 isnearly moved wholly out oi the {lushpipe, so that in comparison withother known devices it reduces only by a reiv small degree thewaterpassage in the. Hushpipe, and therefore an increased rinsingraction is obtained.

Owing to the fact that no special ralrc has to be provided forcontrolling the inlet of the water into the air-chamber. theccnstructicgi ci? the apparatus may be considerabl simplified, while atthe same time a very reliable working is obtained. A. :lnrtherconsiderable advantage of the described flushing apparatus consists inthat the (lushpipe acts at the same time as a guide tor the differentialor distributing piston when the latter' comes out of cooperation withcertain guiding members provided in the casing 7, owing to the recess(i.

iVhat I claim is:

1. In a flushing apparatus, an air chamber, a casing therein, a watersupply conduit comnninicating with the casing, a flushpipe arranged tocommunicate with the air chamber, a differential piston inovablv mountedin the casing and adapted to directly control communication between theair chamber and casing and between the air chamber and the tlush pipe.

2. In a flushing apparatus, an air chain ber, a casing therein, a watersupply conduit communicatingl with the casing, a flushpipe arranged tocommunicate with the air chamber, a dill'erential piston movably mountedin the casing and adapted to alter'- nately close communication betweenthc air chamber and casing and between the air chamber and the Hushpipe.

3. In a flushing apparatus, an air chamber, a casing therein, a watersupply conduit communicating with the casing, a Hush-pipe arranged tocommunicate with the air chamber, a differential piston movably mountedin the casing and adapted to successively close communication betweenthe casing and nasfiyra flush pipe and establish communication betweenthe casing and chamber.

t. In a flushing apparatus, a receiving chamber, a casing therein, awater supply conduit in communication with the casing, a Hush pipenormally communicating with the chamber, and a. differential pistoncomprising means whereby communication between the chamber and fiushpipe is normally established and communication between the casing andchamber is normally closed.

5. In a flushing apparatus, a receiving chamber, a casing therein, awater supplv conduit in communication with the casing, a flush pipenormally communicating with the chamber, and a differential pistonprojecting through the casing into the chamber, said piston comprisingmeans whereby communication between the chamber and Hush pipe is closedand communication between the casing and chamber is established.

6.' In a flushing apparatus, a receiving chamber, casing therein, awater supply conduit in communication with the casing, a

flush pipe normally communicating with the chamber, and a dierentialpist-on comprising an end portion adapted to close the flush pipe and arecessed portion through which communication is established between thecasing and chamber.

7. In a flushing apparatus of the character described, an air-chamber, acasing mountedtherein, a water supply branch directly connected to saidcasing, a flush pipe directly connected to said air chamber, and adifferential piston guided in said casing and having a recessed portion,the latter being adapted to effect communication between said watersupply branch and the interior of the air chamber while one end of thepiston controls communication between the interior of the air-chamberand the flush-pipe, said piston being so arranged relatively to thewater supply branch that in its normal position it is kept in theuppermost position by the pressure of the water and is moved during 'thewhole duration of the movement effecting communication between theinterior of the air-chamber and the flush pipe by the pressureprevailing` in said supply branch.

8. In a flushing apparatus of the character described, an air-chamber, astepped casing having a round cross-section and mounted in saidchamberand rigidly connected thereto, a water supply branch connected tosaid casing, adapting rings artcpiec or this patent may be obtained forve cents each, by addressing the Gommissioner ranged in the latter,packing members cooperating with said rings, a slotted distance piecebetween the rings and acting as a sieve and as a pressure reducingmember, a tightening member for compressing the packing members, adiderential piston guided in said casing and coperating with the packingmembers, a cover for closing the casing, a handle on the differentialpiston and a fiushpipe directly connected to the airchamber, saiddifferential piston provided with a recessed portion adapted to edectdirect communication between the water supply branch and the interior ofthe air-chamber while one of' its ends controls communication betweenthe interior of the air-chamber and the flush-pipe, the water supplybranch being so arranged that it communi- Cates with said casinglaterally of the recessed portion of the differential piston when thelatter takes up its normal position, so that the piston is kept in itslifted position by the water-pressure and is moved during the wholeduration of the movement effecting a communication between the interiorof' the air-chamber and the flush-pipe through the agency of thepressure prevailing in said supply branch. v

9. In a flushing apparatus of the character described, anair-chamberconsisting of two halves, the meeting ends of which inclosean angle and are situated below their outer ends, a casing mounted inthe meeting part of the two halves of the air-chamber, a water supplymember 4 communicating with the casing, a flush-pipe communicating withthe chamber, and a diiierential piston lguided in said casing andadapted to efiect a direct communication between said water supplymember and the interior of the airchamber and to control thecommunication between said chamber and the flush-pipe.

l0. In a flushing apparatus of the character described, an air-chamber,a casing therein, a water supply member communieating with the casing, adifferential piston having a recessed portion, means in said casing forguiding the piston, a flush-pipe connected with the chamber, means inthe flushpipe for guiding the diderential piston, said piston adapted toeiect a direct communication between the casing and the air-chamber andto control communication between said chamber and the flush-pipe.

In testimony that I claim the foregoing as my invention, I have signedmv name.

ROBERT STICKDRN.

ci' Patents, Y

Washington, D. C.

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